set isready to false when disconnected

src/rx.ts

@@ -14,7 +14,7 @@ import {Request, Response, ResponseError, ResponseSuccess, ResponseSuccessType}
 let id = 0;
 export default class JsonRpcRxClient {
 
-    isReady$: Subject<JsonRpcRxClient>;
+    isReady$: Subject<boolean>;
     message$: Subject<Response<any> | Request>;
 
     //@ts-ignore
@@ -30,6 +30,7 @@ export default class JsonRpcRxClient {
     send<T extends ResponseSuccessType>(method: string, params?: any): Observable<T> {
         const req: Request = {jsonrpc: '2.0', id: id++, method, params};
         return this.isReady$.pipe(
+            filter(r => r),
             take(1),
             switchMap(() => {
                 this._ws.send(JSON.stringify(req));
@@ -58,7 +59,7 @@ export default class JsonRpcRxClient {
             this._ws = new WebSocket(this.address);
 
             this._ws.onclose = this.onSocketClose;
-            this._ws.onopen = () => this.isReady$.next(this);
+            this._ws.onopen = () => this.isReady$.next(true);
             fromEvent(this._ws, 'message').pipe(
                 map(({data}: any) => JSON.parse(data))
             ).subscribe(message => this.message$.next(message));
@@ -71,6 +72,7 @@ export default class JsonRpcRxClient {
         if (this.isDestroyed) return;
 
         console.error(`disconnected from ${this.address} code: '${event.code}' reason: '${event.reason}'`);
+        this.isReady$.next(false);
         setTimeout((): void => {
             this.connect();
         }, 1000);